Low-driving-voltage blue phosphorescent organic light-emitting devices with external quantum efficiency of 30%

Adv Mater. 2014 Aug 6;26(29):5062-6. doi: 10.1002/adma.201401621. Epub 2014 Jun 27.

Abstract

A homoleptic iridium (iii) tris(pheny-limidazolinate) complex realizes a high EQE of 30%, a low turn-on voltage of 2.5 V, and a small efficiency roll-off in a blue organic light-emitting device (OLED). This device also shows high power efficiencies over 75 lm W(-1) and an ideal light distribution pattern at 100 cd m(-2).

Keywords: blue phosphorescence; high external quantum efficiency; high power efficiency; low driving voltages; organic light-emitting diodes; phenylimidazole ligands.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Color
  • Electric Conductivity*
  • Electron Transport
  • Imidazoles / chemistry
  • Iridium / chemistry
  • Light*
  • Luminescent Agents / chemistry*
  • Organometallic Compounds / chemistry*
  • Pyridines / chemistry
  • Semiconductors*

Substances

  • Imidazoles
  • Luminescent Agents
  • Organometallic Compounds
  • Pyridines
  • Iridium
  • imidazole
  • pyridine